DPM 2012 SP1 Agent Upgrade Fail on DPM 2 DPM

I’m with a client today installing DPM 2012 SP1, it’s an upgrade from DPM 2012 onto Server 2012.

So long story short, installed SP1 on the 2 servers, Server 1 was backing up SharePoint 2007 and SQL 2005, Server 2 was backing up Server 1. All of the agent upgrades on Server 1 was a success.

However there was a slight hiccup when trying to upgrade the Agent on Server 1 from Server 2.

Error: The service did not respond to the start or control request in a timely fashion (0x8007041D))

So trying to uninstall and then re-install the agent failed, (you need to remove all your protection groups prior to uninstallation by the way).

Here is how I finally fixed it.

1.    I tried to run DPMRA.exe on Server 1 from "C:\Program Files\Microsoft System Center 2012\DPM\DPM\bin\DPMRA.exe"  and it gave me an error saying “VssRequestor.dll” was missing. 

2.    That made it a little easier to solve and I located the VssRequestor.dll file on a client with the DPM 2012 SP1 agent installed in "C:\Program Files\Microsoft Data Protection Manager\DPM\bin\VssRequestor.dll" 

3.    I then copied it to Server 1 "C:\Program Files\Microsoft System Center 2012\DPM\DPM\bin\VssRequestor.dll”

I did also find that some of the historic data was still kept from the previous DPM instance, so ensure you remove any old SQL relics that may still lurk around in your previous server.

Hope this helps.